[z2678] Add script support for quest 660 from scriptdev2/scriptdev2-classic

Thanks to grz3s for providing the necessary data

(based on commit f578017)

Signed-off-by: Xfurry <xfurry@scriptdev2.com>

(based on commit SD2-TBC[s2757] - 1734bd3)

Signed-off-by: Xfurry <xfurry@scriptdev2.com>